Gas scrubber



' 2 Sheets-Sheet 1;

(No Model.)

W. R. BEAL.

GAS SGRUBBBR.

No. 340,543. Patented Apr. 27, 1886.

2 Sheets-Sheet 2.

(No Model.)

W. R. BEAL.

GAS SGRUBBER.

Patented Apr. 27, 1886.

M I I/a'irzewes:

hm. Washington, 0 c.

UNITED STATES PATENT GFFICE.

WILLIAM R. BEAL, OF NEXV YORK, N. Y.

GAS-SCRUBBER.

SPECIFICATION forming part of Letters Patent No. 340,543, dated April 27,1886.

Application filed September 21, 1895. Serial No. 177,600. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM R. BEAL, a citizen of the United States, and a resident of the city, county, and State of New York, have invented a new and useful Improvement in Gas-Scrubbers, of which the following is a specification.

My improvement relates to the means employed for treating gas, whereby the ammonia and other objectionable products are removed by bringing the gas into intimate contact with water or other purifying liquids.

The object of my invention is to provide in a simple and economical form the maximum of available wetted surfaces within a gas-chamber of any given capacity. I secure this object by coiling upon itself at right angles to the plane of the drum or shaft which supports it along strip of sheet metal of suitable width, having both of its side edges turned up so as to act as a continuous trough, which, when coiled and rotated, will cause liquid entering the outer course of its coil to pass between each layer and through its own gravity be retained at thelowest point of the several layers until discharged in and from the central drum, carried by the horizontal shaft which gives motion and support to the coil. By this means the entire surface of the metal will be continuousl y wetted and exposed to the action of the gas. I secure a uniform space between the trough-shaped sheets by the use of an intermediate plate having projections on both of its sides, so as to present points of rest or support for the sheets of metal between which it is placed. The indentations and consequent projections in this plate, as wellas the plate itself, afford additional wetted surfaces for the action of the gas in its transverse passage through the coil. The projections on this intermediate plate are preferably formed by indentations on both sides of the plate. The turned-up edges of the sheets, separated by this intermediate plate, are secured by corrugating the metal forming them. It is evident that other means may be employed to secure a like re sult. The coils are kept in position by an outer rim of metal of suitable thickness acting as an inclosingband. This band. or rim is supported on radial arms extending from the shaft or drum on either side of the coil. Any number of coils may be placed upon the shaft and inclosed within a cylindeixor casing having openings for the admission and discharge of gas and liquid. The drum, which forms the initial point of attachment for the coil or coils,is provided with suitable openings for the admission and discharge of the liquid lifted to the center by the rotation of the coil or coils. Vithin the cylinder, at the base of each coil, is a shallow receptacle or compart- .ment for holding liquid. The outer courses of the coil enter this compartment and receive therefrom the supply of liquid that wets the sheets of metal as said liquid is carried or passed from the circumference to the center, The gas enters the cylinder at the end opposite to where the liquid enters. By this arrange ment it is first brought into contact with liquid heavily charged with ammonia. The liquid is less concentrated with each successive coil until the last one is reached, which is wetted by the liquid just introduced into the cylinder.

Figure 1 represents a vertical cross-section of the cylinder, showing coil within, drawn upon line a: a: of Fig. 2. Fig. 2 represents a longitudinal section of the horizontal cylinder, drawn on line y y of Fig. 1, showing a vertical transverse section of two of the coils and drums and the shaft which supports and actuates the series of coils. Fig. 3 represents a cross-section of the layers of the coil, showing the intermediate plate which separates the trough -shaped sheets. Fig. 4 represents a perspective view. of a portion of one of the layers forming the coil, showing the turnedup edges on each side thereof. Fig. 5 represents a perspective view of a portion of the intermediate plate, showing the projections and indentations thereon. Fig. 6 represents the radial arms secured to the drum-head, and which support the inclosing band or rim of the coil.

Like letters and figures refer to like parts.

A is the cylinder or casing, having 'openings for the admission of gas and liquid and for the discharge of the same. The gas enters the casing at D, and after passing through the series of coils B passes out at F. The liquid enters at 7, and is drawn 0d at 8.

O is the shaft carrying drums L and pulley E.

4. is the rim or inclosing-band which holds the coil in place, and K K K K the radial arms which support the rim. These arms are bolted to the drum-heads, or may be secured to the shaft.

10 10 represent the openings or pipes in the drumhead, through which the liquid fed into the drum by the rotation of the coil is dis charged into the compartmentof the adjoining coil.

M M represent the transverse partitions or flanges which separate the coils. These flanges divide the cylinder into compartments for holding liquid at the base of each coil, and above the line or level of the liquid prevent the passage of gas between the rim 4 and the wall of the casing A. 5 is the base upon which the horizontal cylinder rests.

In Figs. 3 and 5, II represents the interme diate plate having projections on both sides for the uniform separation of the trough shaped sheets B. 2shows the turned-up edge or side of the sheet. 3 3 are the indentations forming the projections referred to.

The operation of my improved apparatus for treating gas' is as follows: The liquid to be used for purifying or other purposes is first admitted at 7, and flows from one compartment to another until all have the necessary supply. The coils are slowly rotated. The entire surface of the metal sheets comprising them is wetted by the action of the liquid as the coil revolves. The gas is then allowed to enter at D, and passes transversely through the layers of the coils, coming in contact with the wet ted surfaces in its passage, thus parting with its ammonia and other objectionable properties. The last coil through which it passes is the first to receive the liquid. It will therefore be seen that the several compartments will hold liquid of different density, the liquid which the gas first comes in contact with be ing heavily charged with ammonia, the last one of the series of coils through which it passes being wetted with the pure liquid as it enters the cylinder.

By the construction shown and described I secure nearly the entire surface of the revolving coils for purifying purposes, whereas without the trough-shaped sheets the surface of the coil could not be wetted unless the water-level was maintained within the cylinder nearly to the center of the coil, thus largely reducing the available space for the flow of gas within the casing.

\Vhat I claim as new and of my invention 1. In an apparatus for treating gas, a cylinder or casing having openings therein for the admission and discharge of gas and liquid, a coil or coils of sheet metal, said sheet having turned-up edges and acting as a continuous trough for the passage of liquid from the circumference to the center of said coil,with intervening spaces between each layer for the transverse passage of gas, and means for rotating said coil or coils within the cylinder, substantially as set forth and described.

2. In a machine for treating gas, a sheet of metal having turned-up sides, said sheet secured to and wound about a central drum, so as to form a continuous trough for the passage of liquid from one end of the coiled sheet to the other, said drum having openings for the admission'and dischargeof liquid, and inter vening spaces between the several layers of the coil for the passage of gas, aninclosingcasing having openings for the admission and discharge of gas and liquid, and means for rotating the coil or coils therein, substantially as set forth and described.

3. The combination of a sheet or sheets of metal having corrugated turned-up edges and coiled upon itself, acting when rotated as a continuous trough for the passage of liquid from the circumference to the center of the coil, with an intermediate plate having projections on both sides thereof for the separation of the trough'shaped sheets, an inclosingcasing having openings for the admission and discharge of gas and liquid, and means for rotating said coil or coils therein, substantially as set forth and described.

4. The combination of coiled sheets having corrugated turned-up edges, and of coiled intermediate sheets provided with indentations forming points of rest, with a central drum provided with openings to receive the liquid lifted by the coiled trough-sheets, and with tubes to discharge said liquid, and means for rotating said coils, substantially as set forth.

5. The combination of coiled sheet B, having turned-up edges, intermediate plate, H, having points of support thereon, central drum, L, having openings to receive and discharge liquid, shaft O, radial arms K, rim 4, annular flanges M M, and easing A, having openingsD F, for the admission of gas and the discharge thereof, and 7 8, for the admission and discharge of liquid, and means for the rotation of the coils, substantially as set forth and described.

WM. R. BEAL.

Vitnesses:

WILLIAM F. HIERs, Tnno. H. ROTH.

ICO 

